JP2018012537A - Two liquid discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two liquid discharge container capable of stably sliding a piston, even when two valves are provided.SOLUTION: A two liquid discharge container comprises: an external container 10 comprising an upper cylindrical part 10a and a lower cylindrical part 10b whose inner diameters are different from each other; a piston member 20 for sliding the external container 10; and a valve assembly 30 attached to an opening 10c of the upper cylindrical part 10a. The two liquid discharge container comprises: a first storage part 12 for storing a first stock solution; a second storage part 13 for storing a second stock solution; and a compression agent storage part 14 for storing a compression agent. The valve assembly 30 comprises a first valve 31 communicated to the first storage part 12, and a second valve 32 communicated to the second storage part 13. An open hole 23a is formed on a center shaft of the piston member 20, and into the open hole 23a, a guide member 40 provided on a center shaft of the valve assembly 30 is slidably inserted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a two-liquid discharge container for discharging two types of stock solutions. More specifically, the present invention relates to a two-liquid discharge container that includes two storage portions that are separately filled with two types of stock solutions in one external container and pressurizes and discharges the two types of stock solutions simultaneously.

In Patent Documents 1 and 2, the inside of the outer container having a small diameter on the upper side and a large diameter on the lower side is divided into three spaces by one or an integrated piston, and the upper two spaces are respectively divided. There is disclosed a two-liquid discharge container that can always discharge two undiluted solutions at the same ratio by filling different types of undiluted solutions and filling a lowermost space with a pressurizing agent.
Patent Document 1 also discloses a configuration in which two valves are provided at positions eccentric from the central axis of the outer container and two types of stock solutions can be discharged independently. Such a configuration has an advantage that the reaction between the stock solutions can be further suppressed as compared with a case where two types of stock solutions are discharged by one valve using a biaxial stem.

International Publication No. 2015/064717 Special table 2013-537503 gazette

  By the way, the two-liquid discharge container having the above-described configuration discharges the raw liquid by sliding the piston with the pressure of the pressurizing agent. Therefore, it is necessary to stabilize sliding in order to realize stable discharge.

  However, it has been found that when two valves are provided, the piston tends to tilt and the sliding tends to be unstable. This is because the stock solution is discharged from a valve eccentric from the central axis, so that the stock solution (flow of the stock solution) is biased in the space, and the bias is different for each space filled with the stock solution. The difference in viscosity and filling conditions of the two stock solutions may contribute to the bias.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a two-liquid discharge container capable of stably sliding a piston even when two valves are provided at a position eccentric from the central axis.

  The two-liquid discharge container of the present invention includes an outer container 10 having an upper cylinder part 10a and a lower cylinder part 10b having different inner diameters, a piston member 20 that slides in the upper cylinder part 10a and the lower cylinder part 10b, and an upper cylinder. And a valve assembly 30 attached to the opening 10c of the portion 10a. A first storage portion 12 for storing the first stock solution is formed in the upper tube portion 10a, and a second stock solution is stored in the lower tube portion 10b. A second accommodating portion 13 is formed, and a pressurizing agent accommodating portion 14 for accommodating the pressurizing agent is formed in a space between the piston member 20 and the bottom portion of the outer container 10. A first valve 31 that communicates with the accommodating portion 12 and a second valve 32 that communicates with the second accommodating portion 13 are provided. A through hole 23 a is formed on the central axis of the piston member 20, and the through hole 23 a , Valve assembly 30 Guide member 40 provided on the central axis, characterized in that it is inserted slidably.

  It is preferable that the guide member 40 is made of a tube, and the second discharge passage that connects the second accommodating portion 13 and the second valve 32 is formed by the through hole 23a and the tube.

  The piston member 20 preferably includes a first seal portion 21e that slides while sealing the inside of the upper tube portion 10a, and a second seal portion 22e that slides while sealing the inside of the lower tube portion 10b.

  The piston member 20 is preferably formed to be axially symmetric.

  The piston member 20 includes a first piston 21 that pressurizes the first stock solution, a second piston 22 that pressurizes the second stock solution, and a piston joint 23 that connects and integrates the first piston 21 and the second piston 22. Preferably it consists of.

  In the two-liquid discharge container of the present invention, a through hole is formed on the central axis of the piston member, and a guide member provided on the central axis of the valve assembly is slidably inserted into the through hole. The guide member suppresses the inclination of the piston member, and stable sliding of the piston member can be realized. Therefore, even if the first valve and the second valve are provided at positions deviated from the central axis, and even if there is a difference in viscosity between the first stock solution and the second stock solution, it is discharged to the end at a constant ratio. Can do.

  If the guide member is formed of a tube, and the second discharge passage that communicates the second accommodating portion and the second valve is formed by the through hole and the tube, the inclination of the piston member is formed while forming the passage of the stock solution. The inclination of the piston member can be suppressed as compared with the case where a passage is provided in another portion (eccentric position) of the piston member.

  If the piston member includes a first seal part that slides while sealing the inside of the upper cylinder part, and a second seal part that slides while sealing the inside of the lower cylinder part, the piston is separated at two locations separated in the vertical direction. The member is supported, and the posture of the piston member is stabilized.

  If the piston member is formed to be axially symmetric, when the stock solution is filled from the valve into the accommodating portion and the piston member slides downward, or when the stock solution is discharged and the piston member slides upward, the piston Even if force is applied to the member, it is difficult to deform into a non-uniform shape, and the inclination of the piston member is further suppressed.

  If the piston members are configured in combination, even when a passage is formed in the piston member, it is easy to form the axis symmetrically.

One embodiment of the two-liquid discharge container of the present invention is shown, (a) is a sectional view, (b) is a plan view, and (c) is a bottom view. It is an exploded sectional view of a piston member. (A) is an aerosol valve, (b) is a valve holder, (c) is sectional drawing which shows a connection member. It is sectional drawing which shows the 2 liquid discharge container which finished discharging stock solution. It is sectional drawing which shows other embodiment of the 2 liquid discharge container of this invention. It is sectional drawing which shows other embodiment of the 2 liquid discharge container of this invention.

  First, the outline of the two-liquid discharge container of the present invention will be described. As shown in FIG. 1, the two-liquid discharge container 1 of the present invention includes an outer container 10 having an upper cylindrical portion 10a and a lower cylindrical portion 10b having different inner diameters, an inner portion of the upper cylindrical portion 10a, and an inner portion of the lower cylindrical portion 10b. A sliding piston member 20 and a valve assembly 30 attached to the opening 10c of the upper cylinder portion 10a are provided.

  The internal space of the outer container 10 is partitioned into three spaces in the vertical direction by the piston member 20. Specifically, the piston member 20 disposed across the upper cylinder portion 10a and the lower cylinder portion 10b forms one space in the upper cylinder portion 10a and two spaces in the lower cylinder portion 10b. Has been. Then, the first undiluted solution is accommodated in the space (first accommodating portion 12) in the upper cylindrical portion 10a, and the second annular space (second accommodating portion 13) is the second of the two spaces in the lower cylindrical portion 10b. Two stock solutions are housed, and the pressurizing agent is housed in the lower space (pressurizing agent housing portion 14) to form a two-liquid discharge product.

The valve assembly 30 includes two valves, a first valve 31 that communicates with the first housing portion 12 and a second valve 32 that communicates with the second housing portion 13, and these valves are valve assemblies 30 (two liquids). It is provided at a position eccentric from the central axis of the discharge container 1). Therefore, the two-liquid discharge product can discharge the first undiluted solution and the second undiluted solution independently of each other. In addition, since the first stock solution and the second stock solution are discharged by one (or integrated) piston member 20, the ratio of the discharge amount of the first stock solution and the second stock solution is the same as that of the first container 12 and the second stock solution. It is always constant according to the ratio of the cross-sectional area (the cross-sectional area in plan view) of the accommodating portion 13. The second housing portion 13 includes a through hole 23 a provided on the central axis of the piston member 20 and a tube 40 provided coaxially with the central axis of the piston member 20 and provided on the central axis of the valve assembly 30. The second valve 32 communicates with the second valve 32. The pressurizing agent storage portion 14 is not in communication with any valve, and the pressurizing agent is not discharged from the valve.
Hereinafter, the configuration of each component will be described in detail.

  As shown in FIG. 1a, the outer container 10 has an inner diameter and an outer diameter both having a small diameter on the upper side (upper cylinder part 10a) and a large diameter on the lower side (lower cylinder part 10b). A cylindrical body part 10e in which an enlarged diameter step part 10d is formed between the cylinder part 10a and the lower cylinder part 10b, a tapered shoulder part 10f formed at the upper end of the body part 10e, and the shoulder part A cylindrical neck portion 10g formed at the upper end of 10f and an enlarged opening portion 10c above the neck portion 10g are provided, and a bottom lid 11 having a gas filling valve 11a is provided at the lower end of the body portion 10e. By being attached, the container which has a bottom part is comprised.

  The outer container 10 is made of synthetic resin. Specifically, it is composed of a thermoplastic resin such as polyethylene terephthalate, polybutylene terephthalate, polyarylate, polyamide, polyethylene, polypropylene, and cyclic olefin copolymer that is not eroded by the stock solution to be filled. Further, a synthetic resin material having translucency may be used so that the remaining amount and state of the stock solution can be visually observed. In order to protect the stock solution from ultraviolet rays, a coating material such as carbon, alumina, or silica may be provided on the inside or the outside surface of the outer container 10.

  As a manufacturing method, in order to provide pressure resistance, it is preferable to manufacture by blow molding such as biaxial stretch blow molding. In this case, for example, a parison formed by injection molding, extrusion molding or the like is heated and expanded in a mold while being stretched in the axial direction to be molded into a predetermined shape. The neck portion 10g and the opening portion 10c are usually the same as the parison and are thick because they do not swell. In the case of blow molding, a bottom portion is formed, but the bottom portion is excised and the opening generated by the excision is closed by the bottom lid 11. The bottom lid 11 is attached to the trunk portion 10e by welding (laser welding, ultrasonic welding, etc.) or adhesion, for example. In particular, when the portion (cylindrical body) excluding the bottom lid 11 of the outer container 10 is colorless and transparent, and the bottom lid 11 is made of the same material as the cylindrical body and is colored, such as black, from the side surface of the cylindrical body The bottom lid 11 can be welded by the transmitted laser.

  The piston member 20 is a substantially convex body (inverted T-shaped body) whose overall shape is axisymmetric. The piston member 20 includes a first piston 21 that slides in the upper cylinder portion 10a, a second piston 22 that slides in the lower cylinder portion 10b, and a piston that connects the first piston 21 and the second piston 22. It is configured by combining the joint 23 integrally. And by accommodating the piston member 20 in the outer container 10, the 1st accommodating part 12 is formed in the upper cylinder part 10a between the valve assembly 30 and the 1st piston 21, and 1st piston 21 and 2nd A second housing portion 13 is formed in the lower cylinder portion 10b between the piston 22 and a third housing portion (pressure agent housing portion 14) in the lower cylinder portion 10b between the second piston 22 and the bottom lid 11. ) Is formed. In addition to the piston member 20, the outer container 10 also has an axisymmetric shape. Further, the central axis of the piston member 20 is located on the central axis of the outer container 10. Therefore, the 1st accommodating part 12, the 2nd accommodating part 13, and the pressurizing agent accommodating part 14 are mutually formed on a concentric shaft.

As shown in FIG. 2, the first piston 21 includes an inner cylinder 21b having a bottom 21a, a disk part 21c extending radially outward from the upper end of the inner cylinder 21b, and a lower side from the outer edge of the disk part 21c. The outer cylinder 21d extends in the direction from the lower end of the outer cylinder 21d and the first seal portion 21e protrudes radially outward from the lower end of the outer cylinder 21d.
An insertion hole 21f for inserting the tube 40 is formed at the center of the bottom portion 21a. An annular projection 21g is provided so as to surround the outer periphery of the insertion hole 21f. The annular protrusion 21g is a part used for attaching a holding member 60 described later to the first piston 21. The first seal portion 21e is in contact with the entire circumference of the inner surface of the upper tube portion 10a, and partitions the first storage portion 12 and the second storage portion 13 in a liquid-tight manner. The cross-sectional shape is an arc shape that bulges in the radially inward direction, the center portion of the arc is integrally connected to the outer periphery of the lower end of the outer cylinder 21d, and both ends of the arc are centered on the upper cylinder portion 10a. By elastically abutting each of the inner surfaces of the upper cylindrical portion 10a, even if the distance from the inner surface of the upper cylindrical portion 10a changes to some extent during sliding due to variations in the inner diameter of the upper cylindrical portion 10a, etc., liquid-tight sealing continues. Can be done.

The second piston 22 has an inner cylinder 22b having an upper bottom 22a, a disk portion 22c extending radially outward from an outer edge of the upper bottom 22a of the inner cylinder 22b, and extends downward from the outer edge of the disk portion 22c. An outer cylinder 22d and a second seal portion 22e projecting radially outward from the lower end of the outer cylinder 22d are provided. The second seal portion 22e has the same configuration as the first seal portion 21e, and the second storage portion 13 and the pressurizing agent storage portion 14 are airtightly partitioned (not only during normal operation but also during sliding) ( Continue sealing.
Further, an upper cylinder 22f extends from the center of the upper bottom 22a of the inner cylinder 22b, and a peripheral wall 22g rises from the upper surface of the disk portion 22c. The inner cylinder 22b increases the strength of the second piston 22, and abuts on the inner cylinder 11c of the bottom lid 11 to ensure the vertical height of the pressurizing agent accommodating portion 14 and the second seal portion 22e. This is a part for preventing the bottom cover 11 from contacting the outer cylinder 11b and preventing the bottom cover 11 from being deformed by heat conduction from the bottom cover 11 when the bottom cover 11 is welded. The peripheral wall 22g is a part used for fitting with the piston joint 23 to increase the strength of the second piston 22. The upper cylinder 22f is also a part for increasing the strength of the second piston 22.

  The piston joint 23 is a substantially cylindrical part molded so that the outer diameter thereof is substantially equal to the inner diameter of the upper cylindrical portion 10a, and is injection-molded using a synthetic resin such as polyacetal, polyethylene, or polypropylene, polyethylene , Sintered body formed by sintering powders of hard foamed resin, polyethylene, polypropylene, ethylene / vinyl acetate copolymer, etc. molded by foaming polypropylene, polyvinyl chloride, polyamide, polyacetal, polyester, polystyrene, polyurethane, etc. Etc. can be used. The upper and lower ends are provided with recessed portions 23 b for fitting with the inner cylinder 21 b of the first piston 21. By attaching the first piston 21 to the recessed portion 23b, the disc portion 21c and the outer cylinder 21d of the first piston are supported by the piston joint 23, and are less likely to be deformed when the piston member 20 slides. It is possible to apply pressure evenly. In addition, a through hole 23a is formed at the center in the axial direction (on the central axis) so as to penetrate from the recess 23b on the upper end side to the recess 23b on the lower end side. The through-hole 23a is a passage for supplying the second stock solution contained in the lower cylinder portion 10b to the second valve 32, and a housing portion for housing the tube 40 that also functions as a passage for the second stock solution. But there is. The through hole 23a is connected to the outer peripheral side of the piston joint 23 via a groove 23c provided from the lower recess 23b to the lower surface. For this reason, when the second piston 22 is attached to the lower end of the piston joint 23, a passage is formed between the lower surface of the piston joint 23 and the upper surface of the second piston 22 so as to communicate the second accommodating portion 13 and the through hole 23a. The A plurality of grooves 23c are provided radially (for example, Y-shaped, X-shaped, * -shaped) from the central axis of the piston joint 23. In a state where the piston member 20 is viewed in plan, the center of gravity of the piston member 20 extends from the central axis. In order not to deviate, they are provided at equal intervals (equal angles). In addition, although the groove part 23c is provided also in the upper end side, this considers the convenience at the time of an assembly and is a device for making the piston joint 23 indistinguishable up and down. Therefore, it is not always necessary to provide the groove 23c on the upper end side.

  The tube 40 is made of a straight pipe made of metal such as stainless steel. However, it may be made of synthetic resin such as polyethylene or polypropylene as long as rigidity can be ensured. The upper end of the tube 40 is fitted and fixed to a connecting member 70 described later. The lower end communicates with the through hole 23a of the piston joint 23 through the insertion hole 21f of the first piston 21 (see FIGS. 1a and 2). The space between the tube 40 and the insertion hole 21f is sealed by an O-ring 50 attached to the outer periphery of the tube 40. The O-ring 50 is held by a holding member 60 so that the O-ring 50 can slide on the tube 40 as the piston member 20 slides.

  The holding member 60 has a cylindrical shape, and the lower end is divided into two forks. The outer end 60 a is fitted between the inner cylinder 21 b of the first piston 21 and the annular protrusion 21 g to be fixed to the first piston 21. Has been. The inner end 60b holds the O-ring 50 with the upper surface of the inner cylinder 21b.

  As shown in FIGS. 1 a and b, the valve assembly 30 includes two aerosol valves 31 and 32, a valve holder 33 that holds these aerosol valves 31 and 32, and two aerosol valves 31 and 32 and a valve holder 33. And a cover cap 34 fixed to the outer container 10.

  The aerosol valve is composed of a first valve 31 and a second valve 32. As shown in FIG. 3a, the first and second valves 31 and 32 include a bottomed cylindrical housing 31a, a stem 31b accommodated in the housing 31a so as to be movable up and down, and a stem hole of the stem 31b. A conventionally known structure that includes a stem rubber 31d that seals 31c, a spring 31e that biases the stem 31b upward, and a cover member 31f that fixes the stem 31b and the spring 31e to the housing 31a. Is.

  As shown in FIG. 3b, the valve holder 33 includes a holding portion 33a that holds the first and second valves 31, 32, and a plug portion 33b that is inserted into the opening 10c of the external container 10 and closes the opening 10c. It is configured. The holder 33a is provided with two holder parts 33c penetrating in the vertical direction, and the first and second valves 31 and 32 are held in the valve holder 33 by being fitted into the holder part 33c ( See FIG. 1a). An O-ring 51 is provided on the outer periphery of the housing 31a of the first and second valves 31, 32, and is fitted into the holder portion 33c so that the space between the inner surface of the holder portion 33c and the outer surface of the housing 31a. A seal is formed on the surface. An O-ring 52 is also provided on the outer periphery of the plug portion 33b. Therefore, if the plug portion 33b is inserted into the opening portion 10c, a seal is formed between the outer surface of the plug portion 33b and the inner surface of the opening portion 10c.

  As shown in FIGS. 1A and 1B, the cover cap 34 is formed by pressing a thin metal plate such as aluminum into a cup shape, and presses the first valve 31 and the second valve 32 against the valve holder 33 while holding the valve holder. In a state where 33 is pressed against the opening 10c of the outer container 10, the outer periphery of the lower end is caulked (plastically deformed) and fixed to the neck 10g.

  Incidentally, neither the first valve 31 nor the second valve 32 is located on the central axis of the outer container 10, but is located at an eccentric position from the central axis (see FIG. 1b). Therefore, in order to connect the tube 40 provided on the central axis and the second valve 32, a connecting member 70 is provided separately.

  As shown in FIG. 3 c, the connecting member 70 has a substantially disc shape, and has a cylindrical first valve connecting portion 70 a connected to the lower portion of the housing 31 a of the first valve 31 and the second valve 32 on the upper surface. A cylindrical second valve connecting portion 70b that is connected to the lower portion of the housing 31a is formed. A cylindrical tube connecting portion 70c is formed at the center of the lower surface. A passage 70d that connects the second valve connecting portion 70b and the tube connecting portion 70c is formed in the connecting member 70. In addition, the lower part of the 1st valve | bulb connection part 70a is notched, and is connecting with the 1st accommodating part 12 directly. A plug member 70e for blocking communication with the first valve connecting portion 70a is inserted into the passage 70d.

  It is preferable that the 1st stock solution with which the 1st accommodating part 12 is filled and the 2nd stock solution with which the 2nd accommodating part 13 is filled are stored in the state isolate | separated from each other, and are mixed at the time of use. For example, a first agent of an oxidative hair dye containing a dye such as paraphenylenediamine is used as a first stock solution, and a second agent of an oxidative hair dye containing an oxidant such as hydrogen peroxide that oxidizes the dye is used as a second agent. An agent containing water that reacts with the inorganic salt as a first stock solution using two stock solutions that give a hair dyeing effect by mixing them, or a non-aqueous exothermic preparation containing an inorganic salt such as magnesium chloride Is used as the second undiluted solution, and the two are mixed to give a warm feeling effect. Moreover, the urethane foam etc. which are formed by condensing and polymerizing an isocyanate and the hydroxyl group of a polyhydric alcohol by water, and foaming with the generated gas or a foaming agent are mentioned.

Furthermore, a combination of a first stock solution containing a water-soluble polymer that thickens in a neutral to weakly alkaline region such as a carboxyvinyl polymer and a second stock solution containing an alkaline agent that neutralizes the water-soluble polymer, A gel that thickens by mixing and neutralizing (uses are not particularly limited, skin care, sunscreen, etc.), a first stock solution containing a polyhydric alcohol such as glycerin or diethylene glycol, and the polyhydric alcohol Combined with a second stock solution containing a small amount of water to be hydrated, mixed together and exothermic due to hydration, and two liquids such as cream and foam that can be warmed react to be discharged and mixed at the same time Two types of undiluted solutions used can be mentioned.
In addition, since the volume of the 1st accommodating part 12 and the 2nd accommodating part 13 becomes small by the predetermined ratio with the piston member 20, an extreme viscosity difference like a cream and water between a 1st undiluted | stock solution and a 2nd undiluted | stock solution is carried out. Even if there is, it can be discharged at a uniform rate until the end.

  The pressurizing agent storage unit 14 is filled with a pressurizing agent made of a compressed gas such as nitrogen, carbon dioxide, air, or a liquefied gas such as liquefied petroleum gas, dimethyl ether, or hydrofluoroolefin. It is particularly preferable to use compressed gas.

  As a method for filling the first undiluted solution, the second undiluted solution, and the pressurizing agent into the outer container 10, first, the piston member 20 is inserted into the outer container 10 to fix the bottom lid 11, and the opening of the outer container 10 is fixed. The valve assembly 30 is fixed to 10c, and the two-liquid discharge container 1 is formed. Next, the stem 31b of the first valve 31 and the second valve 32 is pushed down, and the air in the first housing portion 12 and the second housing portion 13 is simultaneously sucked and the piston member 20 is raised. Thereafter, the first stock solution is filled into the first storage portion 12 from the stem 31 b of the first valve 31, and the second stock solution is filled into the second storage portion 13 from the stem 31 b of the second valve 32. The first stock solution and the second stock solution are filled at the same time, and the piston member 20 is moved downward. At this time, the first undiluted solution is filled from a position deviated from the central axis. However, since the piston member 20 is formed to be axially symmetric, the piston member 20 is not deformed irregularly, and the piston member 20 has its through hole 23a. Is guided by a tube (guide member) 40 provided on the central axis, and therefore slides downward without tilting. Thereafter, the pressurizing agent container 14 is filled with the pressurizing agent from the gas filling valve 11 a of the bottom lid 11. In addition, after assembling the two-liquid discharge container 1, after filling the pressurizing agent storage part 14 with the pressurizing agent, the air in the first storage part 12 and the second storage part 13 is discharged, and the first stock solution and The second stock solution may be filled. In this case, the pressurized container filled with the pressurizing agent can be transferred to another factory and filled with the first stock solution and the second stock solution.

  When discharging the stock solution, the discharge members (push buttons) mounted on the two stems 31b and 31b are operated and simultaneously pressed down. By opening the first valve 31 and the second valve 32 at the same time, the first stock solution and the second stock solution can be discharged simultaneously. That is, by opening the first valve 31 and the second valve 32, the pressurizing agent in the pressurizing agent accommodating portion 14 presses the piston member 20 upward, and the piston member 20 moves upward toward the outer container 10. By sliding inside, the 1st accommodating part 12 and the 2nd accommodating part 13 are contracted, and 1st undiluted | stock solution is 1st via the 1st valve | bulb connection part 70a (1st discharge passage) of the connection member 70. The second stock solution is supplied to the valve 31 and the second undiluted solution passes through the passage between the piston joint 23 and the second piston 22, the through hole 23 a, the tube 40, and the second valve connecting portion 70 b (second discharge passage) of the connecting member 70. To the second valve 32 and discharged from the respective stems 31b to the outside. At this time, the first seal portion 21e and the second seal portion 22e on the outer periphery of the piston member 20 slide in the outer container 10 and the inner periphery thereof also slides on the outer periphery of the tube 40. Since it is provided on the central axis of the piston member 20 (external container 10), it functions as a guide member that guides the sliding of the piston member 20 in the vertical direction, and the inclination of the piston member 20 is suppressed. Stable sliding can be realized. When the discharge is completed, as shown in FIG. 4, substantially the entire piston member 20 is moved to the upper tube portion 10 a side.

  Although the two-liquid discharge container 1 of the present invention has two stems 31b, since the contraction of the first storage part 12 and the second storage part 13 is interlocked with the piston member 20, either one of them is used. Even if only the stem 31b is operated, it does not operate. Therefore, even if it is operated by an incorrect method, only one of the stock solutions is not ejected, and the two stock solutions can be reliably ejected at a predetermined ratio (area ratio of the piston that pressurizes the stock solution). In particular, when a compressed gas is used as a pressurizing agent, the pressure drops when the stock solution is discharged. Therefore, in the conventional two-liquid discharge container, the discharge ratio of the stock solution was easily changed. Even if the pressure decreases, the discharge ratio does not change. In order to push the two stems 31b at the same time, it is preferable to attach a push button straddling the two stems 31b. As the push button, one that can mix and discharge the stock solutions discharged from the two stems 31b inside may be adopted.

  FIG. 5 shows another form of the two-liquid discharge container. The two-liquid discharge container 1A is characterized in that a cylinder member 80 is provided so as to cover the inner side of the upper cylindrical portion 10a.

  The cylinder member 80 has a cylindrical shape having an upper bottom 80a, and its outer surface is in close contact with the inner surface of the upper cylinder portion 10a, and the inner surface is a sliding surface on which the first piston 21 slides. . That is, the inner surface of the cylinder member 80 substantially acts as the inner surface of the upper cylindrical portion 10a. In addition, a communication hole 80b is formed in the upper bottom 80a at a position facing the first valve 31, and a connection hole 80c for inserting the tube connection part 70c of the connection member 90 is formed in the center part. . Further, a groove 80 d is formed from the connection hole 80 c toward the second valve 32.

  The connecting member 90 is substantially the same as that of the previous embodiment. However, a passage for communicating the second valve connecting portion 70b and the tube connecting portion 70c is not formed inside, and a passage is formed by the groove portion 80d provided on the upper surface of the cylinder member 80 and the lower surface of the connecting member 90. ing. The cylinder member 80 is attached to the connecting member 90 by fitting a connecting cylinder 80 e extending from the upper surface of the cylinder member 80 to the connecting member 90. Since other configurations are substantially the same as the previous embodiment, the same reference numerals are given and detailed description thereof is omitted.

  In the two-liquid discharge container 1A having the above configuration, by selecting a material according to the stock solution to be filled, a highly durable container can be obtained, and the stock solution can be stored for a long time. For example, the cylinder member 80 is molded from an alkali-resistant synthetic resin such as polyethylene, polypropylene, polyamide, or glass, and the first piston 21 is a polyolefin elastomer such as silicone rubber, fluorine rubber, polyethylene, a polyamide elastomer such as nylon, a urethane elastomer, or the like. If the outer container 10, the piston joint 23, and the second piston 22 are molded from an acid-resistant synthetic resin such as polyethylene terephthalate, the alkaline solution (two-component hair dye Even when the first container is filled and the second container 13 is filled with the acidic stock solution (two-component hair dye second agent), both stock solutions can be stored stably over a long period of time. Note that the reverse configuration is also possible. Further, by coloring the cylinder member 80 with the same material as that of the outer container 10, the lower part of the cylinder member 80 and the lower part of the upper cylinder portion 10 a of the outer container 10 can be laser-welded. Intrusion into the outer periphery of the can be prevented.

  FIG. 6 shows still another form of the two-liquid discharge container. In the two-liquid discharge container 1B, the outer cylinder 11b of the bottom lid 11 extends upward and covers the inner side of the lower cylinder part 10b. That is, the inner surface of the outer cylinder 11b substantially acts as the inner surface of the lower cylinder portion 10b.

  In such a configuration, the chemical resistance can be further improved by selecting the material of the bottom cover 11. Further, when the outer container 10 is blow-molded in order to increase pressure resistance, the inner diameter cannot be accurately controlled, and thus the inner diameter is likely to vary. For example, the cylinder can be easily secured by dimensional accuracy such as injection molding. By manufacturing the member 80 and the bottom lid 11, that is, by covering the inner surface of the outer container 10 with another member having high dimensional accuracy, variations in the inner diameter can be suppressed, and the first seal portion 21e and the second seal portion 21e of the piston member 20 can be suppressed. Sliding is more stable while the seal portion 22e maintains a seal with the cylinder member 80 and the outer cylinder 11b of the bottom lid 11. In addition, about another structure, since it is substantially the same as the previous form, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in the above embodiment, the tube 40 is fixed to the connecting members 70 and 90. However, for example, the upper portion of the tube may be bent and directly attached to the housing of the second valve. Further, although only the upper end of the tube 40 is fixed, the lower end may be fixed to the bottom lid 11. Further, as a member that covers the inner surface of the lower cylinder portion 10b, a cylindrical cylinder member that is separate from the bottom lid 11 may be used.

1, 1A, 1B Two-liquid discharge container 10 External container 10a Upper cylinder part 10b Lower cylinder part 10c Opening part 10d Diameter-increasing step part 10e Body part 10f Shoulder part 10g Neck part 11 Bottom cover 11a Gas filling valve 11b Outer cylinder 11c Inner cylinder 12 1st accommodating part 13 2nd accommodating part 14 Pressurizing agent accommodating part 20 Piston member 21 1st piston 21a Bottom part 21b Inner cylinder 21c Disk part 21d Outer cylinder 21e First seal part 21f Insertion hole 21g Annular protrusion 22 Second piston 22a Upper bottom 22b Inner cylinder 22c Disc part 22d Outer cylinder 22e Second seal part 22f Upper cylinder 22g Peripheral wall 23 Piston joint 23a Through hole 23b Recessed part 23c Groove part 30 Valve assembly 31 First valve 31a Housing 31b Stem 31c Stem hole 31d Stem rubber 31e Spring 31f Cover member 32 Second valve 33 Valve holder 33 Holding portion 33b plug portion 33c holder 34 covering cap 40 tube (guide member)
50 to 52 O-ring 60 Holding member 60a Outer end 60b Inner end 70 Connecting member 70a First valve connecting portion 70b Second valve connecting portion 70c Tube connecting portion 70d Passage 70e Plug member 80 Cylinder member 80a Upper bottom 80b Communication hole 80c Connection hole 80d Groove 80e Connection cylinder 90 Connecting member

Claims (5)

An outer container having an upper cylindrical portion and a lower cylindrical portion having different inner diameters;
A piston member that slides in the upper cylindrical portion and the lower cylindrical portion;
A valve assembly attached to the opening of the upper cylinder,
A first accommodating portion for accommodating the first stock solution is formed in the upper cylinder portion,
A second accommodating portion for accommodating the second stock solution is formed in the lower cylinder portion,
A pressurizing agent accommodating portion for accommodating the pressurizing agent is formed in the space between the piston member and the bottom of the outer container,
The valve assembly includes a first valve that communicates with the first housing portion, and a second valve that communicates with the second housing portion,
A through hole is formed on the central axis of the piston member,
A guide member provided on the central axis of the valve assembly is slidably inserted into the through hole.
Two-liquid discharge container. The guide member is formed of a tube, and a second discharge passage that connects the second storage portion and the second valve is formed by the through hole and the tube.
The two-liquid discharge container according to claim 1.
Two-liquid discharge container. The piston member includes a first seal portion that slides while sealing the inside of the upper tube portion, and a second seal portion that slides while sealing the inside of the lower tube portion.
The two-liquid discharge container according to claim 1 or 2. The piston member is axisymmetrically formed,
The two-liquid discharge container according to any one of claims 1 to 3. The piston member includes a first piston that pressurizes the first stock solution, a second piston that pressurizes the second stock solution, and a piston joint that connects and integrates the first piston and the second piston.
The two-liquid discharge container according to claim 1.

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